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Schedule II - Valuation and Qualifying Accounts
 12 Months Ended
Dec. 31, 2021
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]  
Schedule II - Valuation and Qualifying Accounts
MSA SAFETY INCORPORATED
VALUATION AND QUALIFYING ACCOUNTS
THREE YEARS ENDED DECEMBER 31, 2021
202120202019
(In thousands)
Allowance for doubtful accounts:
Balance at beginning of year$5,344 $4,860 $5,369 
Additions—
Charged to costs and expenses 1,645 1,172 2,015 
Deductions—
Deductions from reserves, net (1)(2)1,200 688 2,524 
Balance at end of year$5,789 $5,344 $4,860 
Income tax valuation allowance:
Balance at beginning of year$7,188 $5,936 $5,039 
Additions—
Charged to costs and expenses (3)2,575 2,854 1,138 
Deductions—
Deductions from reserves (3)951 1,602 241 
Balance at end of year$8,812 $7,188 $5,936 
(1)Bad debts written off, net of recoveries.
(2)Activity for 2021, 2020 and 2019 includes currency translation gains (losses) of $79, $(107) and $(1,058), respectively.
(3)Activity for 2021, 2020 and 2019 includes currency translation gains (losses) of $29, $(41) and $104, respectively.